[Amps] corona on a quad

[Máximo EA1DDO_HK1H]

Yes, Gerald is right.
If you set your quad as diamond, you will get HV in both side corners. So, diamond configuration is not good for high power.
Box or square configuration has the HV points in the middle of the vertical wires, with nothing around. Much better for high power.

But when power rises over 10 Kw... box´s corners has HV as well... there are HV everywhere.

73, Maximo - EA1DDO

                                               


> From: TexasRF at aol.com
> Date: Fri, 13 Jul 2012 09:11:15 -0400
> To: k7fm at teleport.com
> CC: amps at contesting.com
> Subject: Re: [Amps] corona on a quad
> 
> Hi All, since the quad is made with full wavelength loops. the feed point  
> can be selected to make the high voltage points midway between corners. That 
>  results in no sharp points at the highest voltage locations.
>  
> 73,
> Gerald K5GW
>  
>  
>  
>  
>  
>  
> In a message dated 7/13/2012 7:17:36 A.M. Central Daylight Time,  
> k7fm at teleport.com writes:
> 
> "I doubt  the corners of a quad would act like that as much if at all. 
> Likely  someone has some hard test data on this."
> 
> As I recall, the quad was  developed as a solution to corona discharge.  
> HCJB 
> is a broadcast  station in the Andes and the yagis suffered corona 
> discharge 
> off the  ends.  The quad solved that problem.
> 
> 73,  Colin  K7FM  
> 
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